试题:
脱式计算;
6760÷13+17×25
24×[(
5
6
-
2
3
)×3]
3.5÷[1.4×(0.1-0.05)]
1
4
+[
7
8
-(
3
4
+
1
8
)].

答案:

我来补答
(1)6760÷13+17×25,
=520+425,
=945;

(2)24×[(
5
6
-
2
3
)×3],
=24×[
1
6
×3],
=24×
1
2

=12;

(3)3.5÷[1.4×(0.1-0.05)],
=3.5÷[1.4×0.05],
=3.5÷0.07,
=50;

(4)
1
4
+[
7
8
-(
3
4
+
1
8
)],
=
1
4
+[
7
8
-
7
8
],
=
1
4
+0,
=
1
4
 
 
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